Joseph sheafier



@niet gierig @einer @ffies JOSEPH SHEARER, `or READING, BENNSYWANIA;

i Letters Patent vNo. 71,384, dated .November 26, 1867.

IMPRVBMENT IN HORSE HAY-FORKS. f

dlp rlgchule referat tu in there tttttrt prima mit making gint nf tte slime. f

ATo ALL wHoM 1T MAY ooNoERNa reference being had to the annexed drawings, making a part of this specification, in whichburden is suspended.

after the burden is released.

Figure 4 is a view of the hook` B.

Figures 5 and 6 are links which connect the lever A and hook B.

Figure 7 is n, view of' the swivel C attached to the lever A.

Figure 8 is a view of the arm D attached to the swivel C. Similar letters refer to corresponding parts in the different figures.

penetrated it.

g, which fits in a corresponding cavity or notch, o, in a projection on the side of the swivel C.

the tine is thrust into the substance to he elevated.

Disclaiming all other parts of the fork, I claim as my invention, and desire to secure by LettersPatentH The swivel C, in combination with the lever A', and operated by the arm D, substantially as described.`

Jo'sEPH SHEARER. I

Be' itknow'n that I, Josnru Summen, of the city of Reading, in 'the countyof Berks, andiState of Penn-` Sylvania, have invented a new and useful Improvement on Hay-Forks operated by Horses; and I do herebyl declare that the following` is a full, clear, and exact description of the construction and operation of the sam tiri Figure 1 isa side view of the fork in a vertical position. This is the position of the fork at the time thc 1 Figure 2 is a front view of the fork in a vertical position. This is the position of the fork and its parts Y, Figure 3 is a side view of the lever A, employed to control the hook B on which thehurden is suspended." Y

The 'object of this invention is to construct the fork in such a manner that the substance to be removed cani` be discharged or disengaged from the hook with ease and certainty, in any position, afteribeing elevated to the i 'desired place, and also to secure the substance with facility, by throwing out the hook, after the tine has@` :i3 The object of this contrivunce is to cause the lever A to be pushed down farenough to throw the apparatus 'i l out of' gearywhen the swivel C is turned in any direction, -hy means of' the rope attached to the arni D. The g, hook B will then be drawn down by the weight of the object which it supports, and the object will fall., The i burden will therefore he discharged with certainty and ease, in every position of the fork. If the pull upon the i rope is downward, the-lever A will hodrawn down directly, and if the pull is lateral, the level-will he pushed down i by means of the cavity in the side of' theswivcl and tho projcctiong on thc upper ond of the prong of the fork.

The link Econnccts the lever A with the link F, as is shown in fig. 1 by means of Vpins inserted in the, i holes t and z'. The link F is connected with the hook B hy a pin through the hole j. A slot, c, isicut lengthwise through the link F, as is shown in fig. 6. A pin, Z, iig. 1, xed in the sides of the tine Gruns through A the slot 7e, holding the link Ffin its place, and causing it to work vertically. This slot also causes a lateral A' i motion at the jointj, because, as the link E is pushed down, the ljoint z' moves a little to theV left, throwing the i lower part of the link F to the right; therefore, when the apparatus is in the position indicatedby iig. 2, the motion of the lever A takes full and immediate eilect upon the hook B, by pressing the joint j to the right.

There is therefore no strain on the parts by starting the hook after the tine has penetrated the object to` he i i elevated. By reason of the free and easy motion of the links, caused by the partial lateral` pressure, the lower i link may be set entirely inside of the space between the sides of the tine G, so as to offer` noresistance when The lever A has a conical extension of lthe upper end, around which revolves the swivel C. In this'conical i i" i extension are cut two grooves, b and m, tig. 3, in which the pins c and p, fig. 7, revolve, in order to hold the r; swivel in its place. The pin c also attaches the arm D to the swivel C, as is shown in g. l. The armD turns vertically on the pin e, and has a. notch or protection, e,'which arrests its upward motion as it comes incontact'- with the head ofv the swivel C atf. The arm D thereby becomes prolongation of the lever A, and is used as a handle for the purpose of raising and depressing the lover in operating 'thc hook B. A hole, d, is'pierced` ,l

through the end of the arm D, in which the rope whereby the arm D is operated in discharging the load, is` i secured.' On the upper end of the,fork,`opposite to and facing the side of the swivel C, there is a 

